[lug] screen frequently blacks out on recent update...

[Internet Privacy Advocate]

Interesting on mine ctrl+alt+F7 blacks it out and ctrl+alt+F1 brings it back.  ( Kubuntu 18.10 )
 
 
-----Original Message-----
From: Davide Del Vento <davide.del.vento at gmail.com>
To: Boulder (Colorado) Linux Users Group -- General Mailing List <lug at lug.boulder.co.us>
Sent: Tue, Jan 22, 2019 10:51 am
Subject: Re: [lug] screen frequently blacks out on recent update...

I have this happening occasionally to me. Changing the cables did not fix it. Power supplies in the monitor seemed unlikely, since it randomly affected either one of two monitors. Bad graphic card could be, however I inadvertently found the following workaround which stops the problem for the day and prevented me from worrying more about it (the machine will need to be replaced in several months anyway, so not worth my time once I've found this): go in pure-text mode (CTRL-ALT-F1), stay there for a few seconds, go back to graphic mode (ALT-F7). Without this workaround, the problem will continue so much to make the machine close to useless.

Hope this helps.Davide


On Tue, Jan 22, 2019 at 8:39 AM D. Stimits <stimits at comcast.net> wrote:

 
On January 22, 2019 at 5:15 AM Bear Giles <bgiles at coyotesong.com> wrote: 
 
Has anyone else seen their screen frequently blank out for 1-2 seconds after a recent update? This is happening on both an Ubuntu 18.10 and CentOS system. I don't think it's a hardware issue since it's two different systems, two different monitors, and both have worked fine until the last few days.
I've had this occur when the power supply in the monitor was going bad. I've also had this occur when the cables needed reseating. I also replaced what I believe was a bad video card once for this (the problem went away for a while). I also did not believe it was the monitor because it affected both monitors, but if you have more than one, and hot plug detects one go out and back in, they both blink as it reconfigures. More often it has been the power supply going out (I've replaced power supplies within a couple of different monitors...apparently this is more common than it might appear). Perhaps the update was just coincidental.


Both are running Gnome.
(BTW I never managed to fix Gnome under 18.04. I eventually updated to 18.10 and it now works... but oddly I still get the Kubuntu logo when I'm prompted for the hardware decryption password.)
Bear_______________________________________________ 
Web Page: http://lug.boulder.co.us 
Mailing List: http://lists.lug.boulder.co.us/mailman/listinfo/lug 
Join us on IRC: irc.hackingsociety.org port=6667 channel=#hackingsociety
 _______________________________________________
Web Page:  http://lug.boulder.co.us
Mailing List: http://lists.lug.boulder.co.us/mailman/listinfo/lug
Join us on IRC: irc.hackingsociety.org port=6667 channel=#hackingsociety
_______________________________________________
Web Page:  http://lug.boulder.co.us
Mailing List: http://lists.lug.boulder.co.us/mailman/listinfo/lug
Join us on IRC: irc.hackingsociety.org port=6667 channel=#hackingsociety
-------------- next part --------------
An HTML attachment was scrubbed...
URL: <http://lists.lug.boulder.co.us/pipermail/lug/attachments/20190122/e217e3b7/attachment.html>